Document Type : Original Article
Authors
Department of Civil Engineering, Faculty of Engineering, Bojnord University, Iran
Abstract
Introduction: Pollution of water receiving sources in waste disposal sites is the most important risk of waste disposal on the environment. Therefore, this research has identified the ecological risk (human society, natural flora and fauna) by including the characteristics of sources and pollutants and environments affected by pollution and its type, and has examined their effects with a comprehensive prioritization.
Materials and methods: In this integrated applied study, during a step-by-step and step-by-step process and using available information and statistics (in terms of time and spatial area affected), including examples of the concentration of elements and chemical and physical compounds of pollutants with the origin of waste Urban and waste disposal activities, all types of risks that must be responded to were identified and the contribution of each of the effective, effects and affected was obtained. Axure RP program was used to draw diagrams of safety level calculations, risk and dimension and their distance and risk analysis.
Results and discussion: The results showed that the ecological risk of receiving resources around Bojnord Burial Center as the selected center of North Khorasan Province is in the range of low ecological risk. The biological risk caused by heavy metals is moderate, and the risk of the human food cycle and animal and plant cover is low and without threat to the food cycle. The pollution risk index of the effective factors in the calculation for Bojnoord landfill with current implementation conditions was estimated as Rm=81%. The status of this risk is in the high range of risks and on the border of risks.
Conclusion: According to the identification and analysis of the types of risk around the Bojnord landfill, equal risk, equal risk and equal safety maps were drawn, as a result of which vulnerable centers can be identified and proper planning can be done to control and protect them. In fact, the design of the co-risk map and the potential and actual sources of pollution, the type of pollutant and the target and affected environment, taking into account the time domain, can greatly improve the quality management of resources and complete the existing database in the country and province and prepare for long-term planning.
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